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GCN Circulars

GCN Circulars are rapid bulletins submitted by and distributed to the community. See the documentation for help with subscribing to or submitting Circulars.

Search for Circulars by submitter, subject, or body text (e.g. 'Fermi GRB').
To navigate to a specific circular, enter the associated Circular ID (e.g. 'gcn123', 'Circular 123', or '123').
Advanced Search

To narrow the search results, use advanced search syntax. This allows for specifying which circular field to search (submitter, subject, and/or body). For additional information, refer to the advanced search documentation.

Advanced Search Examples (click to copy):

subject:"Swift"
body:"GRB"
submitter:"Judith Racusin"

29105 results found.

  1. Swift XRT and UVOT observations of GRB080414
  2. GRB 080413B: Faulkes Telescope South optical afterglow observations
  3. GRB 080413A: Liverpool Telescope and Faulkes Telescope South optical observations
  4. GRB 080413A: Suzaku WAM observation of the prompt emission
  5. GRB 080413B: Suzaku WAM observation of the prompt emission
  6. GRB 080414 Watcher observations
  7. GRB080413B
  8. GRB080413A: Swift/UVOT observations
  9. GRB 080413B, Swift-BAT refined analysis
  10. GRB 080413A, Swift-BAT refined analysis
  11. GRB 080413A Bootes observation
  12. GRB 080413B: GROND detection of afterglow in all bands
  13. GRB 080413B: Swift detection of a possibly short burst with optical counterpart
  14. GRB 080413: TAROT Calern observatory optical observations
  15. GRB 080413: Swift detection of a burst with an optical afterglow
  16. GRB 080413: ROTSE-III Detection of Optical Counterpart
  17. GRB 080411: Swift/UVOT refined analysis
  18. GRB 080411, Swift-BAT refined analysis
  19. GRB 080411: Swift-XRT Refined Analysis
  20. Konus-Wind observation of GRB 080411
  21. GRB 080411: VLT redshift
  22. GRB 080411: Swift detection of a bright burst
  23. GRB 080409: Swift-BAT refined analysis
  24. GRB 080330 optical observations
  25. Swift/UVOT observations of GRB080409
  26. UVOT/Swift Observations of GRB080408
  27. GRB 080408: Swift-XRT position of a possible afterglow
  28. GRB 080409: Swift detection of a burst
  29. GRB 080319A: Early RAPTOR optical limits
  30. GRB 080330: RAPTOR detection of prompt optical flash
  31. GRB 080405: Swift-XRT position
  32. GRB 080405: Mars Oddysey and Swift-BAT detection, possible host galaxy
  33. GRB 080328: GAO 150cm telescope Optical Observation
  34. GRB 080330: Prompt PROMPT Observations
  35. GRB080330: optical observations
  36. GRB080328, RIMOTS optical upper limit
  37. GRB080330: Swift XRT refined analysis
  38. GRB 080330 Swift-UVOT refined analysis
  39. GRB 080328: Suzaku WAM observation of the prompt emission
  40. GRB 080330, Swift-BAT refined analysis
  41. Konus-Wind observation of GRB 080328
  42. GRB 080330: GROND Observations
  43. GRB 080330: TAROT Calern observatory optical observations
  44. GRB 080330: Liverpool Telescope Optical observations
  45. GRB 080330A: ROTSE-III Detection of Optical Counterpart
  46. GRB 080330: Swift detection of a burst with an optical counterpart
  47. GRB 080330: TAROT Calern observatory optical detection
  48. GRB 080328, Swift-BAT refined analysis
  49. GRB 080325, Swift-BAT refined analysis
  50. Swift/UVOT observations of GRB080328
  51. GRB080328: Faulkes Telescope North observations
  52. GRB 080328: Swift detection of a burst with an optical counterpart
  53. GRB 080325: Subaru detection of NIR afterglow candidate
  54. GRB 080325: MITSuME Akeno optical upper limits
  55. GRB080325: XRT Refined Analysis
  56. GRB 080325: GROND Observations
  57. GRB 080325: Swift/UVOT Upper Limits
  58. GRB 080325: NIR afterglow candidate
  59. GRB 080319D: GROND Detection of the Optical Counterpart
  60. GRB 080325: Swift detection of a burst
  61. GRB 080319C: Suzaku WAM observation of the prompt emission
  62. GRB 080320, Swift-BAT refined analysis
  63. GRB 080319D: GROND Observations
  64. GRB 080319D, Swift-BAT refined analysis
  65. GRB 080319C: UVOT Observations
  66. GRB 080319B: UVOT Observations
  67. GRB 080319A: UVOT Observations
  68. GRB 080320: Swift XRT refined analysis
  69. GRB 080320: Early Super-LOTIS Observations
  70. GRB 080320: J detection with FLAMINGOS
  71. GRB 080319D: Swift XRT refined analysis
  72. Konus-Wind observation of GRB 080319C
  73. GRB 080319C, Swift-BAT refined analysis
  74. Konus-Wind observation of GRB 080319B
  75. GRB 080319C: Early RAPTOR Observations
  76. GRB 080319C: KAIT OA observations
  77. GRB 080320 - SDSS Pre-Burst Observations
  78. GRB 080320: Swift detection of a burst
  79. GRB 080320: ROTSE-III Optical Limits
  80. GRB 080319B: ROTSE-III Observations of Optical Counterpart
  81. Swift-BAT trigger 306829 is IGR J16479-4514
  82. GRB 080319B: RAPTOR observations of a naked eye burst
  83. GRB 080319A: Swift-XRT Team Refined Analysis
  84. GRB 080319B, Swift-BAT refined analysis
  85. GRB080319B: Prompt PROMPT Detections
  86. GRB 080319C: Swift-XRT Team Refined Analysis
  87. GRB 080319B: Swift-XRT Team Refined Analysis
  88. GRB 080319D: Swift/UVOT Refined Analysis of the Fading Optical Afterglow Candidate
  89. GRB 080319D: MASTER-VWF-Kislovodsk optical observation
  90. GRB 080319C: MASTER-VWF-Kislovodsk optical observation
  91. GRB 080319D: Swift detection of a burst with a possible optical afterglow
  92. GRB 080319A, Swift-BAT refined analysis
  93. GRB 080319C: Early Super-LOTIS Observations
  94. GRB 080319C: Swift detection of a burst with an optical afterglow
  95. GRB 080319C: KAIT OA candidate
  96. GRB 080319B: Change in power law decay index
  97. GRB 080319B: Gemini-South Spectroscopy
  98. GRB080319B Liverpool Telescope optical afterglow candidate
  99. GRB 080319B: Super-LOTIS Detection of a Bright OT
  100. GRB 080319B: KAIT OA

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